xgboost::RTreeNodeStat Struct Reference

node statistics used in regression tree More...

#include <tree_model.h>

Collaboration diagram for xgboost::RTreeNodeStat:

Public Member Functions
	RTreeNodeStat ()=default
	RTreeNodeStat (float loss_chg, float sum_hess, float weight)
bool	operator== (const RTreeNodeStat &b) const
RTreeNodeStat	ByteSwap () const

Public Attributes
bst_float	loss_chg
	loss change caused by current split More...
bst_float	sum_hess
	sum of hessian values, used to measure coverage of data More...
bst_float	base_weight
	weight of current node More...
int	leaf_child_cnt {0}
	number of child that is leaf node known up to now More...

Detailed Description

node statistics used in regression tree

Constructor & Destructor Documentation

RTreeNodeStat() [1/2]

xgboost::RTreeNodeStat::RTreeNodeStat ( )

default

RTreeNodeStat() [2/2]

xgboost::RTreeNodeStat::RTreeNodeStat ( float  loss_chg, float  sum_hess, float  weight  )

inline

Member Function Documentation

ByteSwap()

RTreeNodeStat xgboost::RTreeNodeStat::ByteSwap ( ) const

inline

operator==()

bool xgboost::RTreeNodeStat::operator== ( const RTreeNodeStat &  b ) const

inline

Member Data Documentation

base_weight

bst_float xgboost::RTreeNodeStat::base_weight

weight of current node

leaf_child_cnt

int xgboost::RTreeNodeStat::leaf_child_cnt {0}

number of child that is leaf node known up to now

loss_chg

bst_float xgboost::RTreeNodeStat::loss_chg

loss change caused by current split

sum_hess

bst_float xgboost::RTreeNodeStat::sum_hess

sum of hessian values, used to measure coverage of data

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The documentation for this struct was generated from the following file:

• /home/docs/checkouts/readthedocs.org/user_builds/xgboost/checkouts/stable/include/xgboost/tree_model.h